Support Result<T, E> across FFI when niche optimization can be used by MasterAwesome · Pull Request #122253

Support Result<T, E> across FFI when niche optimization can be used by MasterAwesome · Pull Request #122253 · rust-lang/rust

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Mar 9, 2024

rustbot added S-waiting-on-author

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Mar 18, 2024

rustbot added S-waiting-on-review

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Mar 19, 2024

Allow allow enums like `Result<T, E>` to be used across FFI if the
T/E can be niche optimized and the non-niche-optimized type is FFI safe.

Fields are disallowed so checking the top attribute is enough.

bors added S-waiting-on-bors

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and removed S-waiting-on-review

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May 1, 2024

bors added a commit to rust-lang-ci/rust that referenced this pull request

May 1, 2024

Support Result<T, E> across FFI when niche optimization can be used

Allow allow enums like `Result<T, E>` to be used across FFI if the T/E can be niche optimized and the non-niche-optimized type is FFI safe.

Implementation of rust-lang/rfcs#3391
Tracking issue: rust-lang#110503

Additional ABI and codegen tests were added in rust-lang#115372

fmease added a commit to fmease/rust that referenced this pull request

May 5, 2024

Support Result<T, E> across FFI when niche optimization can be used

Allow allow enums like `Result<T, E>` to be used across FFI if the T/E can be niche optimized and the non-niche-optimized type is FFI safe.

Implementation of rust-lang/rfcs#3391
Tracking issue: rust-lang#110503

Additional ABI and codegen tests were added in rust-lang#115372

bors added a commit to rust-lang-ci/rust that referenced this pull request

May 5, 2024

Rollup of 7 pull requests

Successful merges:

 - rust-lang#122253 (Support Result<T, E> across FFI when niche optimization can be used)
 - rust-lang#123892 (Document That `f16` And `f128` Hardware Support is Limited)
 - rust-lang#124458 (Implement lldb formattter for "clang encoded" enums (LLDB 18.1+))
 - rust-lang#124459 (Stabilize exclusive_range_pattern)
 - rust-lang#124711 (Migrate `run-make/doctests-runtool` to rmake)
 - rust-lang#124725 (Meta: Enable the brand new triagebot transfer command)
 - rust-lang#124727 (Miri subtree update)

r? `@ghost`
`@rustbot` modify labels: rollup

bors added a commit to rust-lang-ci/rust that referenced this pull request

May 5, 2024

Rollup of 7 pull requests

Successful merges:

 - rust-lang#122253 (Support Result<T, E> across FFI when niche optimization can be used)
 - rust-lang#123892 (Document That `f16` And `f128` Hardware Support is Limited)
 - rust-lang#124458 (Implement lldb formattter for "clang encoded" enums (LLDB 18.1+))
 - rust-lang#124459 (Stabilize exclusive_range_pattern)
 - rust-lang#124711 (Migrate `run-make/doctests-runtool` to rmake)
 - rust-lang#124725 (Meta: Enable the brand new triagebot transfer command)
 - rust-lang#124727 (Miri subtree update)

r? `@ghost`
`@rustbot` modify labels: rollup

fmease added a commit to fmease/rust that referenced this pull request

May 5, 2024

fmease added a commit to fmease/rust that referenced this pull request

May 5, 2024

bors added a commit to rust-lang-ci/rust that referenced this pull request

May 6, 2024

dtolnay added the A-FFI

Area: Foreign function interface (FFI)

label

Jan 14, 2025